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Map of a reconnaissance of the approaches to Philadelphia showing the ...
Topographic map of the northern part of Philadelphia County and small adjacent part of Montgomery County showing proposed 1st-, 2nd-, and 3rd-order Civil War batteries. Signed in handwriting: George Davidson, A... More
![Map of a reconnoissance [sic] of the approaches to Philadelphia showing the positions and lines of defence on the west front of the city /](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzIwMTkvMDkvMjEvbWFwLW9mLWEtcmVjb25ub2lzc2FuY2Utc2ljLW9mLXRoZS1hcHByb2FjaGVzLXRvLXBoaWxhZGVscGhpYS1zaG93aW5nLXRoZS1wb3NpdGlvbnMtZTE2YjM1LTEwMjQuanBn/40/34/webp "Map of a reconnoissance [sic] of the approaches to Philadelphia showing the positions and lines of defence on the west front of the city /")
Map of a reconnoissance [sic] of the approaches to Philadelphia showin...
Topographic map of western Philadelphia and small adjacent parts of Montgomery and Delaware counties showing 1st- and 2nd-order Civil War earthworks and batteries. Relief shown by contours, hachures, and spot h... More
Map of a reconnaissance of the approaches to Philadelphia showing the ...
Topographic map of northern Philadelphia and small adjacent part of Montgomery County showing Civil War earthworks and batteries. Relief shown by contours and hachures. Signed in handwriting (brown ink): George... More